I ended up in the Bierkeller the other day and was quite impressed. It was only Sunday afternoon so pretty quiet.
Loads of beers - mainly lagers not real ales - but they had genuine article stuff like Banks from Barbados, Singha thailand and Crown from Oz amongst others.
Good choice of draught as well - carling, mahou, stella, fosters, brahma, heiniken, amstel, coors. the bar was massive and they had different ones at the other end.
Wasnt cheap but wouldnt expect it too. Think it was about £3.50\4 a pint but cant be sure.
Can see it being stag do central tho